<template>
  <el-container class="home-container">
    <!-- 头部区域 -->
    <el-header>
      <div>
        <span class="logo" @click="toWelcome">慧弈系统</span>
      </div>
      <el-button type="info" @click="logout">退出</el-button>
    </el-header>
    <!-- 页面主体区域 -->
    <el-container>
      <!-- 侧边栏 -->
      <el-aside :width="isCollapse ? '64px' : '200px'">
        <!-- 侧边栏菜单区域 -->
        <el-menu
          background-color="#333744"
          text-color="#fff"
          active-text-color="#409EFF"
          unique-opened
          :collapse="isCollapse"
          :collapse-transition="false"
          router
          :default-active="$route.path">
          <!-- 循环items菜单数据 -->
          <template v-for="item in menulist">
            <!-- 判断这一项数据是否有子项菜单 -->
            <template v-if="item.children">
              <!-- 一级菜单 -->
              <el-submenu :index="item.path + ''" :key="item.path">
                <!-- 一级菜单的模板区域 -->
                <template slot="title">
                  <!-- 图标 -->
                  <!-- <i :class="item.icon"></i> -->
                  <!-- 文本 -->
                  <span>{{ item.name }}</span>
                </template>
                <!-- 二级菜单 -->
                <template v-for="subItem in item.children">
                  <el-menu-item :index="subItem.path" :key="subItem.path" @click="saveNavState(subItem.path)">
                    <template slot="title">
                      <!-- 图标 -->
                      <!-- <i :class="subItem.icon"></i> -->
                      <!-- 文本 -->
                      <span>{{ subItem.name }}</span>
                    </template>
                  </el-menu-item>
                </template>
              </el-submenu>
            </template>
            <!-- 若不是多级菜单就会走这里生成一级菜单 -->
            <template v-else>
              <el-menu-item :index="item.path" :key="item.path">
                <template slot="title">
                  <!-- <i :class="item.icon"></i> -->
                  <span>{{ item.name }}</span>
                </template>
              </el-menu-item>
            </template>
          </template>
        </el-menu>
      </el-aside>
      <!-- 右侧内容主体 -->
      <el-main>
        <!-- 路由占位符 -->
        <router-view></router-view>
      </el-main>
    </el-container>
  </el-container>
</template>

<script>
export default {
  data() {
    return {
      // 左侧菜单数据
      menulist: [],
      iconsObj: {
        125: 'iconfont icon-user',
        103: 'iconfont icon-tijikongjian',
        101: 'iconfont icon-shangpin',
        102: 'iconfont icon-danju',
        145: 'iconfont icon-baobiao'
      },
      // 是否折叠
      isCollapse: false,
      // 被激活的链接地址
      activePath: ''
    }
  },
  created() {
    this.getMenuList()
    this.activePath = localStorage.getItem('activePath')
  },
  methods: {
    logout() {
      localStorage.clear()
      this.$router.push('/login')
    },
    // 获取所有的菜单
    async getMenuList() {
      this.menulist = JSON.parse(localStorage.getItem('hy_access'))
    },
    toWelcome() {
      this.$router.push('/welcome')
    },
    // 点击按钮，切换菜单的折叠与展开
    toggleCollapse() {
      this.isCollapse = !this.isCollapse
    },
    // 保存链接的激活状态
    saveNavState(activePath) {
      localStorage.setItem('activePath', activePath)
      this.activePath = activePath
    }
  }
}
</script>

<style lang="less" scoped>
.home-container {
  height: 100%;
}
.el-header {
  background-color: #373d41;
  display: flex;
  justify-content: space-between;
  padding-left: 0;
  align-items: center;
  color: #fff;
  font-size: 20px;
  > div {
    display: flex;
    align-items: center;
    span {
      margin-left: 15px;
    }
  }
}

.logo {
  cursor: pointer;
}

.el-aside {
  background-color: #333744;
  .el-menu {
    border-right: none;
  }
}

.el-main {
  background-color: #eaedf1;
}

.iconfont {
  margin-right: 10px;
}

.toggle-button {
  background-color: #4a5064;
  font-size: 10px;
  line-height: 24px;
  color: #fff;
  text-align: center;
  letter-spacing: 0.2em;
  cursor: pointer;
}
</style>
